Area code
Area code 521
A non-geographic area code used for special services, not tied to a place.
WhereNot tied to a place
Time zoneVaries
Exchanges0
Flagged numbers0
Most reported 521 numbers
No 521 numbers reported yet. Report one.
Area code 521 questions
Where is area code 521?
A non-geographic area code used for special services, not tied to a place.
Is a call from area code 521 a scam?
An area code alone can't tell you. Scammers use and spoof numbers in every area code. Look up the full number to see its reports and FTC/FCC complaints.
What area codes overlay 521?
521 shares its area with 500, 522, 523, 524, 525, 526, 527, 528, 529, 532, 533, 538, 542, 543, 544, 566, 577, 588. In an overlay, new numbers get the newer codes and you dial all ten digits.